Learning Rust sticks best when you ship small, purposeful projects. Below are ten scoped ideas you can execute sequentially or pick à la carte depending on whether you enjoy CLI tooling, backend services, or systems tinkering.
1. CLI To-Do App
Scope: Manage tasks from the terminal—add, list, edit, delete, and persist to JSON/TOML or SQLite using clap/structopt.
Skill boost: Strengthens I/O ergonomics, argument parsing, and error handling on a lightweight codebase.
2. Web Scraper
Scope: Fetch pages with reqwest, parse DOM via scraper, and export structured data to CSV or a database.
Skill boost: Teaches HTTP clients, resilient parsing, and rate limiting for polite automation.
3. Simple Chat Server
Scope: Build a TCP or WebSocket chat with basic rooms and a plaintext protocol atop tokio.
Skill boost: Provides hands-on ownership/lifetime practice inside concurrent networking code.
4. File Encryption Tool
Scope: CLI that encrypts/decrypts files via AES, deriving keys from passwords or passphrases.
Skill boost: Reinforces secure file I/O patterns, cryptographic APIs, and meticulous Result handling.
5. URL Shortener Service
Scope: Build REST endpoints that mint short codes, store mappings in SQLite/Postgres, and redirect hits.
Skill boost: Covers routing (Actix/Axum), persistence, and RESTful design on a compact backend.
6. Minimal REST API
Scope: CRUD service (notes, bookmarks, etc.) with JSON I/O, validation, and API keys.
Skill boost: Deepens understanding of middleware, data modeling, and ORMs like sqlx or diesel.
7. Static Site Generator
Scope: Parse Markdown plus templates (e.g., tera) to output a themed static site with metadata config.
Skill boost: Exercises file traversal, templating, and cohesive CLI UX design.
8. Markdown → HTML Converter
Scope: Implement a parser for headings, lists, and code blocks, either as a CLI or reusable library.
Skill boost: Hones parsing strategies, string manipulation, and crate API design.
9. Basic HTTP Server
Scope: Serve static files and a couple of dynamic routes using std::net or a thin HTTP crate.
Skill boost: Illuminates TCP primitives, manual HTTP handling, and async I/O fundamentals.
10. Blockchain Prototype
Scope: Model blocks with hashes, simple proof-of-work/stake, and a file-backed or peer-to-peer ledger.
Skill boost: Explores data-structure integrity, hashing, and serialization in a safety-critical domain.